SERIES EDITORS KARL MARAMOROSCH Rutgers University, New Jersey, USA
AARON J. SHATKIN Center for Advanced Biotechnology and Medicine, New Jersey, USA
FREDERICK A. MURPHY University of Texas Medical Branch, Texas, USA
ADVISORY BOARD DAVID BALTIMORE ROBERT M. CHANOCK PETER C. DOHERTY H. J. GROSS B. D. HARRISON BERNARD MOSS ERLING NORRBY J. J. SKEHEL M. H. V. VAN REGENMORTEL
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PREFACE
We present the second of two volumes of Advances in Virus Research dealing with natural and engineered resistance to plant viruses. Viruses constitute the single largest group of causative agents of emerging and novel plant diseases and thus represent a serious threat to crop production throughout the world. Nevertheless, and as described in our preface to Volume 75, plant viruses also provide an apparently never-ending source of fundamental insights into pathogen and host biology. In this volume, our authors address topics that must be better understood in order to foster